Couples study ties anger to heart problems, stonewalling to back pain: Study suggests how you argue predicts health problems later in life — ScienceDaily

If you rage with frustration during a marital spat, watch your blood pressure. If you keep a stiff upper lip, watch your back. New research based on how couples behave during conflicts, suggests outbursts of anger predict cardiovascular problems. Conversely, shutting down emotionally or “stonewalling” during conflict raises the risk of musculoskeletal ailments such as a bad back or stiff muscles.